Chap 15 INTRODUCTION TO GRAPHS

Chap 15

INTRODUCTION TO GRAPHS

SOME IMPORTANT FACTS

1.      A bar graph is used to show comparison among categories.

2.      A Pie chart is used to compare parts of a whole.

3.      A Histogram is a bar graph that shows data in intervals.

4.      A  line graph displays data that changes continuously over periods of time.

5.      A line graph which is a whole unbroken line is called a linear graph.

6.      For fixing a point on the graph sheet we need , x- coordinate and y- coordinate.

7.       The relation between dependent variable and independent variable is shown through a graph.